kopia lustrzana https://github.com/espressif/esp-idf
uart: cleaner way of handling error in a critical section
Some critical sections have also been added, making the code more symetric accross the similar functions. Closes https://github.com/espressif/esp-idf/pull/6396pull/7413/head
rodzic
e41e67f2f1
commit
4e3f5573c4
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@ -258,7 +258,9 @@ esp_err_t uart_set_stop_bits(uart_port_t uart_num, uart_stop_bits_t stop_bit)
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esp_err_t uart_get_stop_bits(uart_port_t uart_num, uart_stop_bits_t *stop_bit)
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{
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ESP_RETURN_ON_FALSE((uart_num < UART_NUM_MAX), ESP_FAIL, UART_TAG, "uart_num error");
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UART_ENTER_CRITICAL(&(uart_context[uart_num].spinlock));
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uart_hal_get_stop_bits(&(uart_context[uart_num].hal), stop_bit);
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UART_EXIT_CRITICAL(&(uart_context[uart_num].spinlock));
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return ESP_OK;
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}
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@ -274,7 +276,9 @@ esp_err_t uart_set_parity(uart_port_t uart_num, uart_parity_t parity_mode)
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esp_err_t uart_get_parity(uart_port_t uart_num, uart_parity_t *parity_mode)
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{
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ESP_RETURN_ON_FALSE((uart_num < UART_NUM_MAX), ESP_FAIL, UART_TAG, "uart_num error");
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UART_ENTER_CRITICAL(&(uart_context[uart_num].spinlock));
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uart_hal_get_parity(&(uart_context[uart_num].hal), parity_mode);
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UART_EXIT_CRITICAL(&(uart_context[uart_num].spinlock));
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return ESP_OK;
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}
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@ -1338,17 +1342,19 @@ esp_err_t uart_flush_input(uart_port_t uart_num)
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}
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data = (uint8_t*) xRingbufferReceive(p_uart->rx_ring_buf, &size, (portTickType) 0);
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if(data == NULL) {
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bool error = false;
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UART_ENTER_CRITICAL(&(uart_context[uart_num].spinlock));
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if( p_uart_obj[uart_num]->rx_buffered_len != 0 ) {
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p_uart_obj[uart_num]->rx_buffered_len = 0;
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UART_EXIT_CRITICAL(&(uart_context[uart_num].spinlock));
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// this must be called outside the critical section
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ESP_LOGE(UART_TAG, "rx_buffered_len error");
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UART_ENTER_CRITICAL(&(uart_context[uart_num].spinlock));
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error = true;
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}
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//We also need to clear the `rx_buffer_full_flg` here.
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p_uart_obj[uart_num]->rx_buffer_full_flg = false;
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UART_EXIT_CRITICAL(&(uart_context[uart_num].spinlock));
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if (error) {
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// this must be called outside the critical section
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ESP_LOGE(UART_TAG, "rx_buffered_len error");
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}
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break;
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}
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UART_ENTER_CRITICAL(&(uart_context[uart_num].spinlock));
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